ESB 9000 Series 9.1T-28 1.1″/28mm Dome Tweeter

ESB Audio 9000 Series Speakers

The ESB 9000 Series (Novemila) speakers proudly claim the high-end segment and are among the most technologically advanced car speakers ever made. And also the most elegant! Technology and design come together in a new and unusual aesthetic thanks to the exceptional flower shape around the tweeter membrane and also on the woofer and midrange speaker baskets. However, this luxurious design was not created solely from an aesthetic point of view. It is an expression of innovation that allows the acoustic refraction at the edges of the tweeters to be less pronounced and adapts to the speaker design. An analogy can be found in the new Rolls-Royce engines for the most modern aircraft, which have the same shape at the trailing edge. Exactly where the air exits and the main turbulence is created. With the new design, these engines have achieved great advantages such as a 10 dB reduction in cabin noise and a 10% reduction in fuel consumption. However, this is not just a coincidental similarity. The design of both the ESB high-end speakers and the Rolls-Royce engines is based on the same premise: to reduce unwanted sound characteristics at the edges of the speakers and engines, respectively, and to effectively direct the airflow outward. However, this is just one of the many exclusive technologies that you will find in the 9000 model series. It includes a total of six top-of-the-line individual components, two 2-way component systems and three 3-way systems, which will amaze not only with their sound, but also with their unconventional luxury design and exceptional materials.

PRODUCT DESCRIPTION:

ESB Audio 9.1T-28 are the more advanced tweeters from the two options in the 9000 series. The individual models differ in the diameter of the dome and several other parameters and technologies, but on the other hand they have many technological and design solutions in common. You will probably first notice the beautiful design of the tweeter. However, it is not just an expression of Italian aesthetics, but has its justification. This design allows for perfect dimensional stability and ensures a perfect connection of all parts with very low tolerances, which reduces distortion and improves performance. The special shape of the front of the tweeter improves reproduction to the sides, reduces reflection from car windows and creates ideal conditions for a wider listening angle. The membrane is made of lightweight semi-transparent silk, which is a perfect combination of lightness and strength and is probably the most suitable material for extremely realistic music reproduction today. The dome is impregnated with resin with integrated suspension and is made of one piece, which also includes the suspension. This significantly reduces weight and allows the tweeter to reach very high frequencies. The absence of joints prevents breakdown and various vibration phenomena. The exclusive technologies of the ESB Audio 9.1T-28 speakers include the FCA and TCA systems. The former is a special airflow control design that ensures a controllable and rapid release of energy accumulated during the movement of the dome without causing permanent oscillations. This contributes to a more accurate and faithful response to the sound source and to the accuracy and overall quality of the audio experience. The TCA system for controlling the return airflow reduces turbulence and noise and controls the damping of the dome by dosing the air flow. The Faraday copper ring helps reduce the inductance of the voice coil for minimal resistance at high frequencies. This provides a better high-frequency response, which allows the speaker to reproduce high-frequency sound more accurately. The reduction in inductance also contributes to better handling of fast transitions in audio signals. This can improve the speaker’s ability to reproduce transient sound impulses more accurately. The tweeter’s high-quality neodymium magnet provides tremendous magnetic force, even after hours of use when the tweeter becomes hot. The tweeter also includes a secondary or master magnet that serves to stabilize and regulate the magnetic flux and concentrate it only in front of the voice coil, thereby increasing efficiency, manageable power, distortion and bandwidth. The special design of this magnetic assembly ensures that the lines of force are concentrated exactly where they are needed, without leakage. Great attention has also been paid to the body, which is created using very precise CNC machines to very close tolerances to increase efficiency and performance. The large surface area helps to reduce temperature so that the tweeter can operate safely.All magnetic groups have been designed using sophisticated FEM software to optimise performance and reduce distortion. The voice coil is very light and can easily operate above 20kHz, ensuring fast transient response and a very natural sound. Everything has been thought of during production, including a pure natural felt ring placed just above the dome frame, which helps to dampen reflections for better focus on the soundstage. The package includes designer installation rings with a diameter of 95 mm, which ensure a visually coordinated installation in combination with ESB Audio 9000 series center speakers.

PRODUCT FEATURES:

• A 28 mm diameter dome made of pure Japanese silk impregnated with resin.
• Lightweight steel grille with floral design and a second cover grille with ESB logo.
• The front grille does not only have a cosmetic function, but also acts as an acoustic lens, the shape of which significantly reduces side noise and reduces reflection from the car’s windows.
• Felt ring to eliminate any parasitic vibrations.
• The super-lightweight aluminum voice coil uses a high-strength aluminum alloy to reduce its thickness and thus its weight. The winding is also aluminum with a pure copper “wrap”. This achieves the perfect combination of resistance and wire weight.
• The FCA airflow control system ensures a controllable and rapid release of energy accumulated during the movement of the dome, without causing permanent oscillations.
• The TCA reverse airflow control system reduces turbulence and noise and controls the dome damping by metering the airflow.
• The Faraday copper ring drastically reduces the inductance of the voice coil for minimal resistance at high frequencies well above 25 kHz.
• The body is machined from a single piece of very low carbon steel to achieve higher magnetic flux, which means higher efficiency and lower distortion. The heavy weight ensures excellent cooling.
• The F52H neodymium main magnet represents the most suitable solution for both magnetic force in relation to weight and for supporting high temperatures (120°C compared to 80°C for a “classic” neodymium magnet).
• The secondary, or master, magnet is used to stabilize and regulate the magnetic flux and concentrate it only in front of the voice coil, which increases efficiency, manageable power, distortion, and bandwidth.
• The pole plate is manufactured using a numerically controlled machine, not by stamping, which significantly reduces design tolerances in favor of performance.
• Magnetic board made of extremely low carbon steel.
• Gold-plated copper terminals and extremely flexible connection cables with a high silver content to reduce electrical connection losses.